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I reverted addition of a single sub-list title per WP:BRD, as there is only one list here and the addition has been contested at Wikipedia talk:WikiProject Aircraft#More Templates. The aircraft article on which the template is used will be an example of the sole class of aircraft involved, is the extra complexity here justified? — Cheers, Steelpillow (Talk) 08:34, 2 October 2019 (UTC)[reply]
There is no real reason to reduce the precision for readers, then the title should be more specific and indicate that these are all sailplanes. - Ahunt (talk) 17:03, 2 October 2019 (UTC)[reply]